Debt (Schedule of Short-term Debt) (Details) - USD ($) $ in Millions		Sep. 30, 2020	Dec. 31, 2019
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Current installments of long-term debt		$ 429	$ 28
Short-term borrowings, including amounts due to affiliates	[1]	70	81
Total		$ 958	$ 496
Weighted average interest rate, short-term borrowings		1.00%	2.30%
Loans Payable [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Short-term borrowings, including amounts due to affiliates	[1]	$ 300
Revolving Credit Facility [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Weighted average interest rate, short-term borrowings		1.60%	1.60%
Accounts Receivable Securitization Facility [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Borrowings outstanding	[2]	$ 0	$ 115
Weighted average interest rate, short-term borrowings		0.00%	2.40%
Revolving Credit Facility [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Borrowings outstanding	[3]	$ 459	$ 272

[1] The weighted average interest rate was 1.0% and 2.3% as of September 30, 2020 and December 31, 2019, respectively. During the nine months ended September 30, 2020, the Company entered into an aggregate of $300 million in short-term, bilateral term loans, which were repaid during the same period.

[2] The weighted average interest rate was 0.0% and 2.4% as of September 30, 2020 and December 31, 2019, respectively.

[3] The weighted average interest rate was 1.6% and 1.6% as of September 30, 2020 and December 31, 2019, respectively.